MIL-C-22992 Class L
Heavy Duty Cylindrical Connectors

Description

MIL-C-22992 Class L heavy duty connectors are the largest size cylindricals, highly suitable for industrial or military applications, and designed to meet the demands of heavy power interconnections. MIL-C-22992 Class L connectors carry current ranges from 40 to 200 amps with conductor sizes 6 to 4/0.

Safety features are incorporated to assure protection of personnel and equipment if connectors are inadvertently disconnected under load. Class L connectors are available only in the specific configurations prescribed by MIL-C-22992 for either military or industrial applications. This rigid configuration control assures correct interconnection of electrical circuits for maximum safety and reliability.

Applications

• Military ground vehicles/Heavy equipment
• Geophysical
• Portable lighting systems
• Power distribution systems

Features & Benefits

• High Current Capacity
• Rugged Construction
• Safety
• Serviceability
• Current range from 40 to 200 amperes
• Direct current or single/three phase, 60/400 Hertz alternating current
• Automatic grounding for safety

Design Features

• Greatest Capacity: Current ranges 40 to 200 amps, conductor sizes 6 to 4/0
• Safety: Complete protection of personnel and equipment if connectors are inadvertently disconnected under load
• Foolproof Mating: Design incorporates specific voltage, current, frequency, phase and grounding requirements
• Standardization: MIL-C-22992 Class L insert arrangements specify connector/cable combinations for maximum reliability
• Serviceable Contacts: Contacts are normally crimped to the cable before connector assembly. No insertion tools required. Bushings are available to adapt smaller diameter wires to larger contacts.
• Arc Quenching Design: Recessed socket contacts within the insert create an arc suppressing chamber which protects the user when connectors are separated under load.
• Programmed Coupling Sequence: Grounding and neutral contacts engage before power contacts.
• Waterproof Design: A unique combination of grommets and seals provides waterproofing in any condition - mated or unmated, capped or uncapped.
• Rugged Construction: Machined from high strength aluminum. Straight-line attachment of accessories eliminates possibility of cable twisting or misalignment.
• Accessories: Supplied with all Class L connectors as indicated on the individual connector descriptions. Replacement accessories may be ordered separately.

Design Benefits

Connector shell style and contact type—wall mount and cable connecting receptacles are supplied with socket contacts only and always lead from the power source. Plugs (with coupling rings) have pin contacts only and always lead to the equipment end.

Shell size—the direct relationship of shell size to current carrying capability reduces the possibility of inadequate wiring for heavy electrical loads.

Insert rotation - when carrying alternating current (A.C), different angular rotations of the insert within the connector shell are used to distinguish between 60 Hertz and 400 Hertz circuits.

Keyway position: Four positions of the main keyway are used to discriminate between the following power sources:

• Two wire D.C
• Two wire single phase A.C
• Three wire single phase A.C
• Four wire three phase A.C

Standards & Requirements

MS approved versions qualified to MIL-C-22992. Incorporates MIL-C-5015 inserts plus special arrangements. Class C: pressurized. Class R: environmental.

Coupling & Mounting

Double stub threaded per MIL-STD-1373 for fast coupling, easy cleaning. 5 key polarization. Rated to 500 complete mating / unmating cycles.

Contact Termination

Crimp or solder termination.

Performance & Environmental Effect

Operating temp. from –55°C to +125°C. Resilient inserts provide high dielectric strength and moisture barrier. Sealing gaskets at every joint for waterproofing. Rugged shells are explosion proof and are resistant to vibration and shock, hydraulic fluids, oils and salt spray corrosion. Operating voltage to 3000 VAC (RMS) at sea level.

Optional Features

• 7 shell styles with over 300 insert patterns that include both MS and special patterns for a wide variety of multiconductor cables.
• Coax and thermocouple contacts available.
• Accessories have left hand threads to minimize cable twisting, wire breakage, accidental connector disassembly.
• Alumilite hard anodic finish for abrasion and corrosion resistance or conductive cadmium plate finish.